package java6.src.chapter04.Example04;
class Animal{
    public void shout(){
        System.out.println("动物发出叫声");
    }
}
class Dog extends Animal{
    public void shout(){
        System.out.println("汪汪汪......");
    }
}
public class Example04 {
    public static void main(String[] args) {
        Dog dog = new Dog();
        dog.shout();
    }
}
